Air conditioning apparatus



April 36, 1935. B, VIZAMORE ETAL 1,999,495"

I AIR CONDITIONING APPARATUS I Filed March 13, 1955 s Sheets-Sheet 1 April 30, 1935. v ZAMQRE ET AL 1,999,495

AIR CONDITIONING APPARATUS Filed March 15, 1933 s' Sheets-Sheet 2 Fig.2 16

R MIN A ril 30, 1935. B. v. ZAMORE ET AL AIR CONDITIONING APPARATUS Filed Marh 15, 1933 s Sheet-Sheet s Patented t. so, i935 UNE STATES AIR CONDITIONING APPARATUS Birger V. Zamore and Henry Edward Sperling, Toledo, Ohio Application March 13, 1933, Serial No. 669,490

9 Claims.

This invention relates to air conditioning apparatus, but more particularly to apparatus for residence installation by which the air can be suitably tempered and washed and humidified to 5 supply air which is not only humidified and washed of dirt and impurities, but also is properly tempered, and an object is to produce a simple and efiicient apparatus of this character which can be inexpensively manufactured and 10 installed and has the novel features of construction, arrangement and operation hereinafter described.

Another object is to, produce a method of treating air by which the air is washed, humidified, and thereafter the air stream is propelled through a zone where in a novel manner the air is tempered readily and efiiciently.

Further objects and advantages will hereinafter appear, and, for purposes of'illustration, but not of limitation, an embodiment of the invention is shown on the accompanying drawings, in which:

Figure 1 is a vertical sectional elevation of an air conditioning apparatus;

Figure 2 is an enlarged sectional view on the line 2--2 of Figure 1; and

Figure 3 is an enlarged sectional View on the line 33 of Figure 1.

The illustrated embodiment of the invention comprises a furnace having a sheet metal casing I ll, which is suitably supported on angle irons H, and in the lower region thereof is a fire box l2 having the usual door opening (not shown). In this instance a grate 3 for coal is mounted in the casing and a suitable lining it covers a portion of the side walls. Although a coal furnace is shown, it could be readily adapted for the use of gas or oil without diificulty. It will be seen that the casing H! has a sheet metal bot-- tom wall l5 which also forms the bottom of an ash pit l6. V

The upper portion #7 of the metal casing H] is frusto pyramidal in shape, and the" products of combustion pass from the frusto pyramidal portion into a radiator it which is joined to the portion i! at the front portion thereof, as shown in Figure 2, and from the radiator 18 they are discharged from the furnace through a pipe [8 leading to the usual chimney. The inner wall of the radiator l8, except for that portion joined to the frusto conical portion H, has an upwardly and inwardly inclined inner wall l9, which ex tends parallel to the outer wall of the portion H, but is spaced laterally therefrom to provide 55 an upwardly and inwardly inclined air passage 20, the air from such passage being discharged into a.chamber 2| disposed directly above the radiator.

Spaced laterally from the radiator l8 and enclosing the same is a sheet metal housing 22, 5 the lower end of which rests on a plate 23 forming the bottom of the furnace, and outside of the housing 22 is a suitable layer 24 of insulation. It will be noted that the casing l B is spaced a substantial distance from the housing 22 to provide a vertical air passage or duct 25. From the outer wall of the casing l0 project a series of'bafiles or fins 26 to assist in heating or tempering the air passing upwardly through the ducts.

The lower ends of the ducts 25 communicate with a moisture or spray chamber 27, which is disposed directly beneath the ash pit It; in fact,

' the bottom wall [5 of the ash pit provides the top wall of the moisture chamber 21, to which air is introduced through an inlet opening 28. Disposed in the chamber 2'! is a pipe 29 having a plurality of spray nozzles 30, which create a fine mist or spray Within the chamber 21 to humidify and wash the air which enters through the inlet 28. In operation, the mist, or water vapor, impinging against the underside of the heated wall 15, assists in the vaporization thereof and greatly facilitates humidifying the air therein.

Covering the outlet from the moisture chamber 21 to the vertical ducts are filters 3|, which are disposed vertically with the upper ends thereof inclined inwardly toward each other. A bracket 32 supports the lower edge of each filter, and a bracket 33 releasably engages the upper edge portion of each filter. In practice, it is found that 5 spun glass filters are effective and desirable for this purpose, owing to their efiiciency and because they can readily and repeatedly be cleansed of the dirt particles, and other foreign matter. The filters 3| are mounted in such manner that the spray from the nozzles an i thrown against them,

and the water not only cleanses them, but also washes the air passing'therethrough. It is to be understood the water is sprayed into the ch n r 28 only when the rooms to which heated air is supplied, requires additional humidity.

From the above description it is apparent that the air from the moisture chamber 2'! passes upwardly through the ducts 25 and the stream of air is divided. a portion passing through the duct 29, and the other portion passing through a duct 34 comprising a continuation of a portion of the duct 25 and formed between thehousing 22 and the outer wall of the radiator l8.

. As will hereinafter appear, the suction created 55 in the chamber 2| above the radiator I8, is such that the suction in the ducts 34 and 20 is substantially the same so that the velocity of air in the two ducts is approximately the same. The duct 20 is shown approximately twice the size of duct 34, but since the duct 20 is heated to a higher degree, the temperature of the air discharged from both ducts is approximately the same. In this manner the heating of the air is more efficiently effected since a greater heated area is contacted by the air before being discharged from the apparatus.

From the chamber 2! the heated air is drawn through an opening 35 disposed centrally of the top wall of the chamber 2| and into a chamber 36, on opposite sides of which are disposed blowers 3? which operate to drawthe air from the chamber 2| and force it through passages 38 into a collecting chamber 39 from which extend pipes leading to the various rooms, The blowers 3'? are mounted on a shaft ll, which may be suitably driven by an electric motor 42, or in any other desired manner. If desired, the motor 32 may be thermostatically controlled in a well known manner, so that when the temperature falls below a predetermined minimum degree the blowers will be driven.

In order to provide an air passage larger than that afforded by the ducts leading from the blower fans 37, when the fans are not running a damper 53 controls an opening 44 disposed beween the blowers 31. By swinging the damper to open position a relatively free air passage is provided from the chamber 36 into the collecting chamber 39. As shown, the damper 43 is mounted on a shaft M and has a crank 45 on the outside of the casing. The crank may be actuated, for example, by the same thermostatic device which controls the operation of the motor d2. Any suitable means well known in the art may be provided for this purpose.

It is to be understood that numerous changes in details of construction, arrangement and op eration may be effected without departing from the spirit of the invention, especially as defined in the appended claims.

What we claim as new and desire to secure by Letters Patent is:

1. An air conditioning apparatus having aj'furnace provided with a fire box, an ash pit beneath said fire box, and a spray chamber beneath said ash pit having an air inlet, said apparatus comprising means for spraying liquid into said spraying'chamber for impingement against a heated wall of said ash pit, and means providing an air duct leading laterally from said spray chamber and thence upwardly along the side of said fur nace in heat-exchanging relation thereto.

2. An air conditioning apparatus comprising 'a spray chamber having an air inlet and an air outlet, an air'filter arranged in inclined position in said outlet, means for spraying water in said chamber for humidifying the air therein and in such manner as to direct same against said filter and against a wall of said chamber, means for heating said wall and for heating the water in contact therewith for facilitating vaporization thereof, means providing an air duct leading upwardly from said outlet, and means for heating the air in said duct.

3. In an air conditioning apparatus having a furnace provided with a fire box, a radiator disposed above said fire box through which pass the products of combustion, and. an ash pit below said fire box, said apparatus comprising a spray chamber below said ash pit, means for creating liquid spray in said chamber, said chamber having air inlet and outlet openings, a filter in said outlet opening for filtering the air passing therethrough, said filter being so arranged as to be washed. by the spray formed in said chamber, means providing a duct leading upwardly from said outlet, said radiator being formed to provide upwardly diverging ducts communicating with said last duct, and blower means above said radiator for drawing air' through said ducts and forcing same from the apparatus.

4. In an air conditioning apparatus having a furnace provided with a fire box, a radiator disposed above said fire-box through which pass the products of combustion, and an ash pit below said fire box, said apparatus comprising a spray chamber below said ash pit, means for creating liquid spray in said chamber, said chamber having air inlet and outlet openings, a filter in said outlet opening for filtering the air passage therethrough, said filter being so arranged as to be washed by the spray formed in said chamber, means providing a duct leading upwardly from said outlet, said radiator being formed to provide upwardly diverging ducts communicating with said last duct, a pair of laterally spaced blowers disposed above said diverging ducts, means providing an air passage between said blowers for supplying air in an axial direction to said blowers, ducts leading from said blowers respectively, a chamber for receiving the air from said blowers, a duct communicating with a space between said blowers, a normally closed damper controlling said last duct, and means for opening said damper.

5. In an air conditioning apparatus having a furnace provided with a fire box, a radiator disposed above said fire box through which pass the products of combustion, an ash pit below said fire box, and a spray chamber below said ash pit, said apparatus comprising means for creating liquid spray in said chamber, said chamber having air inlet and outlet openings, a filter in said outlet opening for filtering the air passage therethrough, said filter being so arranged as to be washed by the spray formed in said chamber, means providing a duct leading upwardly from said outlet, fins in said duct extending laterally from said furnace for increasing the temperature of the air passing therethrough, said radiator being formed to provide upwardly diverging ducts communicating with said last duct, a pair of laterally spaced blowers disposed above said diverging ducts, means providing an air passage between said blowers for supplying air in an axial direction to said blowers, ducts leading from said blowers respectively, a chamber for receiving the air from said blowers, a duct communicating with a space between said blowers, a normally closed damper controlling said last duct, andi'means for opening said damper.

6. In an air conditioning apparatus having a furnace provided with a fire box, said apparatus comprising a wall beneath said fire box having at least a portion thereof of heat-conducting material, a spray chamber in the lower portion of the furnace communicating with said wall, said chamber having an air inlet, air-humidifying means in said chamber for impinging a liquid spray against said wall, and means providing an air duct leading upwardly along the side of said furnace and in heat-exchanging relation thereto.

7. An air conditioning apparatus having a furnace provided with a heating chamber, said appa- LQQQAQE ratus comprising a spray chamber adjacent said heating chamber, means to transmit heat from said heating chamber to said spray chamber, airhumidifying means in said spray chamber for impinging spray against said heat transmitting means, and means providing an air duct leading upwardly from said spray chamber along the side of said furnace and in heat-exchanging relation thereto.

8. In an air conditioning apparatus having a fire box, an ash pit below said fire box, a spray chamber below said ash pit having air inlet and outlet openings, the upper wall of said chamber being of heat conducting material and constituting the bottom wall of the ash pit, and means for spraying liquid in said chamber for impingement against said heated wall.

9. In an air conditioning apparatus having a furnace provided with a heating chamber, said apparatus comprising a spray chamber one wall of which is common to said heating chamber and through which heat is adapted to pass, means for spraying a liquid in said spray chamber for impingement against said wall, said spray chamher having air inlet and outlet openings, and filter means covering one of said openings and arranged to be washed by the spray.

BIRGER V. ZAMORE. HENRY EDWARD SPERLING. 

